An athlete lent his swim fins to a friend. the friend promised to return the fins in a week, but two months had passed and, despite many reminders, the friend still failed to return the fins. the athlete went to the friend's house one night to retrieve them. after knocking on his friend's door several times with no response, the athlete tried the door and found it unlocked. he opened the door and entered the house. he looked around for 20 minutes, but he could not locate the swim fins. he concluded that his friend was probably using them and left the house, taking nothing from it and closing the door behind him. if the athlete is later charged and tried for burglary, his best defense to the charge is which of the following? a he left the house without doing anything. b he took nothing from the house. c the swim fins belonged to him. d his friend's door was unlocked.